Presentation Transcript

1. Supporting Global Immunization – a Humanitarian Interest and a Self Interest

   Walter A. Orenstein MD, DSc (Hon) Pediatric Grand Rounds April 4, 2012
2. Op-Ed from Steven Weinreb, an internist certified in oncology and hematology “I have chronic lymphocytic leukemia. Three months ago, I underwent an allogeneic stem-cell transplant ….” For the next seven months or so … I have a newborn’s immunity; I am prey to illnesses like chickenpox, the measles, and the flu.” “The truth is, we should not get vaccinated for ourselves alone; we should do it for one another.” Source: New York Times, December 27, 2011
3. US National Vaccine Plan 2010 In the era of global pandemics and mass travel, the public health of U.S. citizens is closely related to diseases occurring in other countries. Even though many VPDs such as polio, measles, and rubella have been eliminated in this country, the U.S. remains vulnerable to importations as long as these diseases continue to persist elsewhere. Support for overseas (pre-departure) vaccination of mobile populations, including refugees and immigrants migrating to the U.S., will reduce the likelihood of importation. Support for developing and introducing new vaccines to address diseases in other countries and assisting with strengthening and enhancing capacity of their immunization programs contributes toward providing an “umbrella of protection” for the U.S. and fulfilling the U.S. government’s broader commitment to global public health. http://www.hhs.gov/nvpo/vacc_plan/
4. Topics to be covered Basic background on herd immunity Disease eradication as the ultimate goal (smallpox, polio, measles) Global burden of vaccine-preventable diseases Measles as an “indicator disease” for problems Global Immunization Structure What pediatricians can do Not covered – new vaccines and new technologies that would help
5. Community Immunity - #1 Sustained transmission Transmitting case Susceptible Transmitting case Susceptible Transmission terminated Transmitting case Immune
6. Community Immunity - #2 Transmitting case Immune Immune Immune Immune Immune Susceptible (Indirectly Protected) Immune Susceptible (Indirectly Protected)
7. Source: Fine PEM, et al. Community Immunity in Plotkin SA, Orenstein WA, Offit PA, Vaccines 5th edition, Elsevier, 2008, pp 1573-1592
8. Smallpox
9. Benefits of Smallpox Eradication to the US Sencerand Axnickdocumented in the United States during 1968: 14.2 million persons were vaccinated of whom 5.6 million were primary vaccinations and 8.6 million were revaccinations. Because of vaccine complications, 238 required hospitalization 9 died, and 4 were permanently disabled. The total costs to the country, including the costs of quarantine services, were estimated to be US$150 million. Source: Henderson DA et al. Smallpox and Vaccinia in Vaccines 5th edition, 2008
10. Global U5 Mortality: Role of Vaccine Preventable Diseases (2008 data) 8.8 million under five deaths 17% (1.5 million) from vaccine preventable diseases Source: Black RE at all, Global, regional, and national causes of child mortality in 2008: a systematic analysis, Lancet. 2010 Jun 5;375(9730):1969-87. Epub 2010 May 11. * WHO/IVB estimates Provided by Thomas Cherian via email 3/7/12
11. 1.5 million Vaccine preventable deaths, children under age of 5, 2008 Pneumococcal diseases* 476 000 Rotavirus* 453 000 Hib* 199 000 Pertussis 195 000 Measles 118 000 Tetanus 63 000 Source: Black RE at all, Global, regional, and national causes of child mortality in 2008: a systematic analysis, Lancet. 2010 Jun 5;375(9730):1969-87. Epub 2010 May 11. * WHO/IVB estimates Provided by Thomas Cherian via email 3/7/12
12. 1.5 million deaths among children from vaccine preventable disease by WHO regions, 2008 Source: Black RE at all, Global, regional, and national causes of child mortality in 2008: a systematic analysis, Lancet. 2010 Jun 5;375(9730):1969-87. Epub 2010 May 11. * WHO/IVB estimates Provided by Thomas Cherian via email 3/7/12
13. Measles Selected Complications: Pneumonia Diarrhea Otitis Media Encephalitis SSPE Keratitis Death
14. Catch-up campaigns Follow-up campaigns Confirmed cases Routine vaccination coverage (%) Interruption of endemic transmission Measles Elimination, the Americas, 1980-2011*. A total of 3.2 million measles cases and 16,000 deaths would have occurred between 2000-2020 if PAHO strategies were not implemented. This resulted in a savings of US$ 208 million in treatment costs.1 Source: Country reports to PAHO/WHO. *Data until EW 35/2011; coverage data not available for 2010. 1IbdemAcharya et. al. Provided by Anne Schuchat, Presentation to NVAC 2/8/12
15. Measles, United States, 1996-Present Provided by Anne Schuchat, Presentation to NVAC 2/8/12
16. Measles, United States, 2011Geographic Distribution of Cases (n=222) = 1 case Provided by Anne Schuchat, Presentation to NVAC 2/8/12
17. Measles, United States, 2011Source of Importations, n=72 *Patient visited more than 1 country during the incubation period † Likely acquired disease from French tourist 72% of importations were among U.S. residents traveling abroad Provided by Anne Schuchat, Presentation to NVAC 2/8/12
18. 2009 Imported Measles, U.S., as of 12/31/2009 71 cases 21 importations 12 imported virus cases D4 H1 3 B3 CS206311-A Provided by Anne Schuchat, Presentation to NVAC 2/8/12
19. Measles Outbreaks*United States, 2011 112/222 (50%) annual cases were outbreak-associated 17 total outbreaks Median outbreak size was 6 (range: 3 – 21) 44% of outbreak-associated cases were unvaccinated philosophical belief exemptors *Outbreak = 3 Provided by Anne Schuchat, Presentation to NVAC 2/8/12 or more epidemiologically linked cases
20. Impact of Selected Measles Importations Into the US in 2011 I Minnesota – 22 cases started by an unvaccinated child of Somali heritage, infected in Kenya, returned to the US and attended drop in child care Measles developed in 3 contacts at the center (including the first case, the infant living at the homeless shelter) Subsequent cases occurred in 2 homeless shelters, 2 health care facilities,2 households, and 1 other child care center.Fourteen children were hospitalized From Hampton T, JAMA 2011;306:2440-2442
21. Impact of Selected Measles Importations Into the US in 2011 II Indiana – 14 cases started by a 24 year old unvaccinated US resident exposed in Indonesia, hospitalized with diagnosis of “Dengue Fever” Of the additional patients who were infected,10 exposed others in health care facilities. An investigation identified more than 780 persons who came in contact with infected individuals, including exposures in a church, factory, and school bus. From Hampton T, JAMA 2011;306:2440-2442
22. Impact of Selected Measles Importations Into the US in 2011 III Measles Salt Lake County, Utah - 9 cases traced back to an unvaccinated high school student who traveled to Europe Public health authorities investigated 49 confirmed or suspected cases, quarantined 184 individuals, and notified approximately 12 000 contacts. The Utah Department of Health, Salt Lake Valley Health Department, and Primary Children’s Medical Center estimated that the direct cost of health department and PCMC physician and staff time was $250 000 and the cost of vaccines, immunoglobulin, and blood work was approximately$41 700. Direct costs for controlling this outbreak conservatively totaled nearly $300 000. From Hampton T, JAMA 2011;306:2440-2442
23. Keys to Maintaining Measles Elimination in the U.S. High 2-dose MMR vaccination coverage High quality surveillance system Rapid identification of and response to measles cases Measles is reportable within 24 hours per Council of State and Territorial Epidemiologists guidelines Aggressive outbreak control measures Access to reliable laboratory testing capabilities Genotyping can give clues to source in some instances Information sharing tools (Epi-X, HAN) Thinking beyond our borders Provided by Anne Schuchat, Presentation to NVAC 2/8/12
24. Vaccination of U.S.-Bound Refugees 70,000 refugees resettled (70 nationalities from 100 countries) to 49 states annually Refugees not legally required to get vaccinations before U.S. resettlement ~ 1/3 of refugees arrive in U.S. with no documented vaccinations > 40 VPD outbreaks in last 5 years 1 recent imported measles case in Burmese refugee from Malaysia led to 8 cases in U.S., costly state/local PH response, and delayed resettlement of refugees Missed opportunity to vaccinate refugees between required overseas health assessment & arrival in U.S. (4-6 months) Provided by Anne Schuchat, Presentation to NVAC 2/8/12
25. Major causes of mortality among children <5 years 1990 vs. 2008 Measles accounts for ~23% of overall decrease in child mortality 2008: 8.8 mil 1990: 12.1 mil Source: M. van den Ent et al, J Infect DisSuppl, July 2011, pp S18-S23 Provided by Peter Strebel, via email 3/8/12
26. Phase 1 (45 districts covered) Phase 2 (157 districts) Remaining (159 districts) #1: India 14 states with MCV1 <80% are implementing measles SIAs 17 states with MCV1 coverage ≥80% introduced a routine second dose by August 2011. * Phase-2 campaigns ongoing; data as on 23 Jan 2012. Provided by Peter Strebel, via email 3/8/12 Source: Based on target population available with GoI
27. #2: Resurgence in Africa 4-fold increase since 2008 Large outbreaks in Burkina Faso (2009), S. Africa (2010), and DRC (2011) Outbreaks in drought affected Horn of Africa High case-fatality Weekly Epidemiological Record (2011) 86:129-136 Provided by Peter Strebel via email 3/8/12 Source: Wkly EpidRec, APRIL 2011,86, 129–135
28. <50% (2 countries or 1%) 50-79% (41 countries or 21%) 80-89% (24 countries or 12 %) >=90% (126 countries or 66%) #3: Weak Immunization Systems 1st dose: 67 Countries have MCV1 coverage <90% 2nd dose (routine): 54 countries do not have routine 2nd dose Campaigns: Variable quality Delayed Measles 1st dose coverage among infants, 2010 Provided by Peter Strebel via email 3/8/12
29. Measles Initiative Annual Donations 2001-2012 and Financial Resource Requirements, Projections, Funding Gap 2012-2015* 94 59 11 36 38 44 Provided by Peter Strebel via email 3/8/12 * Excludes all country contributions and direct social mobilization funding from partners
30. Fatal Respiratory Diphtheria in a U.S. Traveler to Haiti --- Pennsylvania, 2003 In October 2003, the Pennsylvania Deptof Health and CDC were notified of a suspected case of respiratory diphtheria in a previously healthy Pennsylvania man aged 63 years who reported that he had never been vaccinated against diphtheria. He and seven other men from NY, PA, and W. VA. had returned from a week-long trip to rural Haiti, where they helped build a church. Source: MMWR, January 9, 2004 / 52(53);1285-1286
31. Polio – a paralysing disease for life
32. Milestones on the way to Polio Eradication
33. 1988 350,000 cases 125 endemic countries World Health Assembly voted to eradicate polio Polio Cases 2011 650 cases reported (as of 20 March 2012) 4 endemic countries 3 countries with re-established transmission (sustained > 12 mos) 9additional countries with transmission
34. Selected Challenges Political commitment Management of human resources and accountability Inaccessible areas in endemic countries Continued quality SIAs with monitoring Area-specific gaps in surveillance quality Continuing outbreaks Funding Source: Modified from Martin R, WHO, Polio, It’s everyone’s problem, NVAC February 8
35. Source: Martin R, WHO, Polio, It’s everyone’s problem, NVAC February 8
36. Selected Key Organizations Involved in Global Immunization WHO UNICEF GAVI Alliance Bill & Melinda Gates Foundation US Organizations CDC USAID FDA NIH Polio Eradication – Rotary International
37. WHO Mandate: Immunization Vaccines & Biologicals Housing scientific expertise and disseminating global immunization intelligence Convening the world's leading expertise in Immunization, Vaccines and Biologicals Facilitating technical cooperation with member states*, technical institutions, academia and public/private partnerships Coordinating technical assistance to member states *194 Member States across Six Regional Offices Source: McKinney S, USAID, Immunization: Global Architecture, NVAC February 8
38. UNICEF: Immunization Program Division UNICEF supports a wide array of activities at country, regional and global levels UNICEF works in support of governments and in collaboration with partners (e.g. GAVI) Focus on: Demand creation and social mobilisation Supply, logistics and cold chain systems Reaching the Unreached (reduce inequities by focusing on immunizing the “Fifth Child”) Source: McKinney S, USAID, Immunization: Global Architecture, NVAC February 8
39. Bill and Melinda Gates Foundation (BMGF) Investing billions in Global Health Vaccines & Immunization – a focus of their global health strategy Discovery Development Delivery Advocacy Multi pronged approach and a very engaged partner in many areas of vaccine development and immunization Positioned to take risks and do so gladly Source: McKinney S, USAID, Immunization: Global Architecture, NVAC February 8
40. USAID’s role USAID’s vaccines and immunization programs serve two functions: Donor agency – provide funds to areas that help to achieve our mission of reducing child mortality through immunization, (global, regional, country levels) Policy development - engage in policy dialogue and development (global and country level), and Technical support – engage in technical dialogue and development and to provide technical support (global and country level). Source: McKinney S, USAID, Immunization: Global Architecture, NVAC February 8
41. GAVI: Four strategic goalsStrategic plan 2011-2015 Source: McKinney S, USAID, Immunization: Global Architecture, NVAC February 8
42. New vaccines and tiered pricing Source: UNICEF Supply Division; CDC
43. GAVI: Children immunised with pneumococcal and rotavirus vaccines Source: WHO-UNICEF coverage estimates for 1980-2010, as of July 2011. Coverage projections for 2011-2012, as of September 2011. World Population Prospects, the 2010 revision. New York, United Nations, 2010 (surviving infants).
44. Goal 5 of the National Vaccine Plan 2010 Increase global prevention of death and disease through safe and effective vaccination Lists 6 objectives and strategies for achieving the goal http://www.hhs.gov/nvpo/vacc_plan/
45. What Can Pediatricians Do? I Assure their patients are fully immunized for vaccines currently recommended in the US Assure their patients who are traveling receive all recommended vaccines for international travel (wwwnc.cdc.gov/travel/page/vaccinations.htm) Particularly important for measles for young infants – can vaccinate as young as 6 months (http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6013a1.htm?s_cid=mm6013a1_w)
46. What Can Pediatricians Do? II Help make polio eradication a reality by working with local Rotary Clubs in their area Help in advocating with government officials about the importance of US government financial support and technical assistance for global immunization Volunteer for UNICEF http://www.unv.org/how-to-volunteer/what-it-means-to-be-a-un-volunteer.html http://www.unv.org/about-us/faqs.html#5 A resource available from the American Academy of Pediatrics can be found at: (www2.aap.org/immunization/about/globalpartnerships.html)
47. Acknowledgments Anne Schuchat and Rebecca Martin – CDC Thomas Cherian, Peter Strebel, Marta Gacic-Dobo, and Jean-Marie Okwo-Bele – WHO Susan McKinney – USAID Edward Hoekstra - UNICEF Dianne Miller and Katy Seib - Emory